Your stop valve is the one fitting you only think about when something goes wrong. When a pipe bursts, a tap will not stop running or a fixture needs replacing, that valve has to shut the water off quickly and completely. A valve that has seized, drips at the handle or still lets water trickle through when closed can turn a small job into a stressful one.
At EZ Plumber SG, we replace the valves inside your home: the isolation (angle) valves under sinks, behind toilet cisterns and on water heater supply lines, and the stop valves inside the unit that control a kitchen or bathroom, for HDB flats and condominiums. The valve at the water meter is on PUB's side of the supply, so we don't work on it. We are based in Jurong West and look after households across Jurong, Clementi, Bukit Batok and the rest of the West. To see everything we do, visit Our Services, or see how we price our work under Our Rates. If the water is coming from the pipe itself rather than the valve, see Pipe Repair & Leak Detection.
Signs Your Stop Valve Needs Replacing
Stop valves can sit untouched for years, so problems often only show up at the moment you need them:
- Seized or Stiff Handle: Mineral scale and corrosion build up inside a valve that is rarely turned, until it will not move by hand. Forcing it risks snapping the spindle or cracking an old joint.
- Will Not Shut Off Fully: Water keeps trickling from your taps even with the valve closed, usually because the internal seal or ball has worn.
- Leaking at the Handle or Joints: Drips from the spindle, the valve body or the threaded connections, often leaving white or green crusting on the valve and the pipe around it.
- Broken or Corroded Parts: A cracked lever, a stripped handle or heavy corrosion on older brass fittings, which can make the valve unreliable in an emergency.
Our Stop Valve Replacement Process
Replacing a valve on the supply line means working with the water off, so we plan the job to keep the interruption as short as possible:
- Inspection & Assessment: Checking which valve has failed, the pipe material and size, and whether a simple repair is enough or the valve needs replacing.
- Isolating the Supply: Shutting off the water further upstream and draining down the affected section before any fitting is loosened.
- Removal & Fitting: Taking out the old valve, cleaning the pipe threads or ends, and fitting the new valve with proper thread sealing so every joint is watertight.
- Testing & Handover: Restoring the supply, checking each joint for leaks, and opening and closing the new valve to confirm it shuts off fully. We then show you where it is and how to use it.
Practical & Transparent Pricing
Plumbing costs vary by job scope, access, urgency and the parts required, so the fairest quote is one based on the work needed. Swapping an easy-to-reach angle valve under a sink is a different job from replacing a seized valve in a cramped spot behind a cistern or on a heater line. WhatsApp us a photo of the valve and the pipe around it for an estimate, and nothing goes ahead until you approve it.
- In-unit stop valve replacement: from S$70 per valve
- Angle/isolation valve replacement (sink, cistern or heater line): from S$50 per valve
Prices are estimates for standard jobs during normal hours. Prices marked "from" are labour only, and parts are extra. We confirm the estimate on site before any work begins.
Stop Valve FAQs
Where are the stop valves in my home?
Most homes have small isolation (angle) valves under the kitchen sink and each basin, on the pipe feeding each toilet cistern, and on the supply to the water heater. Many flats and condos also have a stop valve inside the unit that controls a whole kitchen or bathroom. It is worth finding them before you ever need them.
My stop valve will not turn. Should I force it?
No. Valves that have not been turned for years often seize with scale and corrosion. Forcing one with a spanner can snap the handle or spindle, or crack an old joint, leaving you with a leak that you cannot shut off. It is safer to leave it and have it looked at.
Can a leaking stop valve be repaired instead of replaced?
Sometimes. A slow drip from around the spindle can occasionally be stopped by tightening or repacking the gland. A valve that will not close fully, is badly corroded or has a cracked body is normally replaced. We always explain both options clearly so you can decide.
Is the stop valve my responsibility or PUB's?
PUB maintains the water mains and the connecting pipes up to your water meter, including the meter itself. The pipes and fittings downstream of the meter are maintained by the consumer, so the valves inside your home, and those feeding your sinks, toilets and water heater, are yours to look after. If the problem is at the meter or before it, contact PUB.
How often should I check my stop valves?
Turning your stop and isolation valves off and on again once or twice a year helps stop them seizing, and you will know they work when it matters. If one is stiff or starts to drip afterwards, have it checked before it fails completely.
Know Your Water Will Shut Off When It Matters
Do not wait for a burst pipe to find out your stop valve has seized. WhatsApp us a photo of the valve or call 8866 1005, Monday to Sunday, 8am to 11pm, and we will tell you what is likely wrong and what it should cost. We work in homes across Jurong West, Clementi, Bukit Batok and the rest of the West.
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